diff --git a/pkgs/development/libraries/haskell/cabal/cabal.nix b/pkgs/development/libraries/haskell/cabal/cabal.nix
index f6220cb0fb3..5b9ac3da9b6 100644
--- a/pkgs/development/libraries/haskell/cabal/cabal.nix
+++ b/pkgs/development/libraries/haskell/cabal/cabal.nix
@@ -67,7 +67,7 @@ attrs :
               ./Setup build
 
               export GHC_PACKAGE_PATH=$(ghc-packages)
-              ./Setup haddock
+              [ -n "$noHadock" ] || ./Setup haddock
 
               eval "$postBuild"
             '';